EP1304190B1 - Schneidwerkzeug zum entfernen von überzügen auf mineralischen substraten - Google Patents

Schneidwerkzeug zum entfernen von überzügen auf mineralischen substraten Download PDF

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Publication number
EP1304190B1
EP1304190B1 EP02102442A EP02102442A EP1304190B1 EP 1304190 B1 EP1304190 B1 EP 1304190B1 EP 02102442 A EP02102442 A EP 02102442A EP 02102442 A EP02102442 A EP 02102442A EP 1304190 B1 EP1304190 B1 EP 1304190B1
Authority
EP
European Patent Office
Prior art keywords
segments
grinder according
cutting
concentration
segment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02102442A
Other languages
English (en)
French (fr)
Other versions
EP1304190A1 (de
Inventor
Jean-Pierre Chevalier
François Boland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carbodiam SA
Original Assignee
Carbodiam SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carbodiam SA filed Critical Carbodiam SA
Publication of EP1304190A1 publication Critical patent/EP1304190A1/de
Application granted granted Critical
Publication of EP1304190B1 publication Critical patent/EP1304190B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions

Definitions

  • the present invention relates to cutting tools intended for the removal of coatings deposited on mineral substrates according to the preamble of claim 1.
  • These coatings are especially paints bituminous products based on acryl, latex or epoxy, adhesives for tiling or carpet, plaster or plaster, even projections of flame retardants.
  • EP 0 865 878 and EP 0 865 879 and US 3 745 719 bushel wheels in the shape of a tray or bowl, lined with diamond segments, which in contact with a mineral support, will retain the cutting power until the end of life, revealing during wear and tear successive layers of diamond.
  • the wheels described in EP 0 865 878 and EP 0 865 879, which are considered the closest state of the art, include segments in the form of a circumflex accent with a wing extending substantially following the perimeter of the disc.
  • the application DE-101 39 762.3 discloses a combination of the geometry of a strawberry, capable of a strong removal rate of material and little diamond segments sensitive to wear in contact with the mineral substrate.
  • the strawberry is composed of segments consisting of a hard and thin layer with high concentration of diamond inclined relative to the surface of the mount so to provide a positive cut in the material to be removed and of a support layer, at the back (in relation to the thicker) and at a lower concentration diamond.
  • This segment thus performs the function of removing the coating, considering the ability of the cutting edge to peel it, and this, stably, via a self sharpening mechanism of the hard edge in contact with the mineral substrate, and the polishing function of the substrate by adapting wisely the characteristics of the support layer at a grinding job.
  • a geometrical arrangement adapted to the segments and chip evacuation holes provided in the support of the tool improves the performance of this one, mounted on a rotary grinding machine connected to a vacuum cleaner.
  • the purpose of the present invention is to remedy defects caused by the sense of cutting in passes parallel.
  • Another object of the invention is to avoid wear concentrated at one point abrasive segments.
  • Another object of the invention is to allow a high-performance serial production.
  • Another object of the invention is to guarantee a better job security of the disc.
  • the object of the invention is a surfacing wheel which differs from the closest state of the art in that the segments are arranged according to at least two different provisions so as to present, in the course of cutting process, the cutting edge according to at least four different inclinations.
  • the segments have an inclined cutting face to his basic plan that allows for a positive cut in the direction of the rotating cut in the material to to work.
  • the segments placed according to at least one of the have an inclined cutting face with respect to its basic plan that allows for a positive cut in the sense of cutting down in the material to to work.
  • the segments consist of two layers, the first hard and thin consisting essentially of a metallic binder enclosing fine abrasive grains (such as diamond), the second consisting essentially of a metallic binder enclosing abrasive grains larger than those of the first layer.
  • the first layer has, so advantageous, grains of the order of 0.2 mm in diameter circumscribed in high concentration, of the order of C60 in FEPA concentration.
  • the second layer is advantageously consisting of grains of abrasive of the order 0.6 mm in diameter circumscribed and weaker concentration, of the order of C40 in FEPA concentration.
  • a part segments is arranged with the axis of the tangent profile at circle passing through the tip of the profile and that another part of the segments is arranged with the short flank tangent to the outer circle corresponding to the periphery of the tool.
  • Fig. 1 shows an abrasive segment of the grinding wheel of the invention, in the form of a ploughshare with two flanks respectively long 1 and short 2, consisting of two layers 3 and 4, the face 3 being inclined at an angle at the base plane 6 of the segment.
  • Fig. 2 shows the position of both flanks 1 and 2 relative to the central axis 7 of the segment.
  • Fig. 4 provides a general view of the wheel of the invention, which is composed of a body 10, generally metal and pierced with holes 11, lined with these segments arranged here according to two provisions: four segments 8 (referred to as “working segments”) are arranged with the axis of the profile tangent to the circle passing through the tip of the profile and four segments 9 (designated as name of "boot segments”) whose short flank is tangent to the outer circle corresponding to the periphery of the tool.
  • the direction of rotation is indicated by an arrow 17.
  • Fig. 7 shows the inclination of the cutting edges two successive segments, type 8 and 9, with respect to a circle concentric to the outside diameter of the grinding wheel, that is to say, in relation to the velocity vector of rotation, these angles, designated 12, 13 for a segment placed according to regulation 8 and 14, 15 for a segment placed according to paragraph 9.
  • Fig. 7 shows the inclination of the cutting edges two successive segments, type 8 and 9, with respect to a circle concentric to the outside diameter of the grinding wheel, that is to say, in relation to the velocity vector of rotation, these angles, designated 12, 13 for a segment placed according to regulation 8 and 14, 15 for a segment placed according to paragraph 9.
  • For the understanding of drawing includes indicative numerical values.
  • the grinding wheel and its segments shown in the figures serves to remove coatings on a mineral support (no represent).
  • the segments consist of two layers, one first layer 3 hard and thin usually consists of a metal binder encircling fine diamond grains, the order of 0.2 mm diameter circumscribed in strong concentration, of the order of C60 in FEPA concentration, and a second layer 4 generally consisting of a binder metallic ring enclosing larger diamond grains ( even conventional abrasive), of the order of 0.6 mm circumscribed diameter in lower concentration, the order of C40 in FEPA concentration.
  • the cutting edges of the segment have a tilt (angle 5) to ensure a smooth cut positive, interesting in service because it forces the segment to penetrate the material and to engage the ridge under the coating.
  • the 2 unequal branches 1 and 2 of the segment and their placement under two separate provisions means that, in work, in diving, without advance movement of the machine, the same zone of coating is attacked according to two edges different cuts, which achieves work in passes crossed and promotes fragmentation of the chip; this phenomenon is more marked if the work is carried out "in swallowing "(the usual way of working).
  • By progressing cleared area towards a packed area because relative to a fixed point, it's a total of 4 edges tilt that we will see scroll.
  • Segment layout according to mode 9 a the complementary advantage, in the case of work mode when swallowing, to realize, considering the inclination (angle 5) of segment outward, to make a positive cut interesting in the sense of the working edge, which force the segment to penetrate the material and to engage the edge under the coating. Engagement in the subject is realized along the short edge 2 of a segment placed according to the provision 9 and is not concentrated at one point.
  • the one-piece shape of the segment which cutting edges, is inherently more robust than the combination of small segments placed according to varied orientations because it leads to the use of a smaller number of segments while ensuring at least the same functions.
  • This element is easier to manipulate which allows to automate the manufacturing processes and, given its more large contact area with the wheel support 10, improves the qualities of mechanical strength required by the standard EN 13236.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Paints Or Removers (AREA)

Claims (9)

  1. Schleifscheibe zur Oberflächenbehandlung in Form einer Schale, bestehend aus einem Körper (10), durch den Löcher (11) gebohrt sind und der mit Segmenten in Form einer Pflugschar versehen ist, die 2 Seiten (1, 2) in Bezug auf die Drehrichtung aufweist, dadurch gekennzeichnet, dass die Segmente in mindestens zwei unterschiedlichen Anordnungen (8, 9) angeordnet sind, um während des Schneidverfahrens die Schneidkante in mindestens vier verschiedenen Neigungen anzulegen.
  2. Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass die Segmente eine Schneidfläche aufweisen, die um einen Winkel (5) in Bezug auf ihre Grundebene (6) geneigt ist und die es ermöglicht, einen positiven Schnitt in Richtung des Schneidens durch Drehung in dem zu bearbeitenden Material auszusparen.
  3. Schleifscheibe nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die nach mindestens einer der Anordnungen (9) angeordneten Segmente eine Schneidfläche (3) aufweisen, die um einen Winkel (5) in Bezug auf ihre Grundebene (6) geneigt ist und es ermöglicht, einen positiven Schnitt in Richtung des Schneidens durch Absenken in das zu bearbeitende Material auszusparen.
  4. Schleifscheibe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Segmente aus zwei Schichten gebildet sind, einer ersten harten und feinen (3), die in der Substanz von einem metallischen Bindemittel gebildet ist, das feine Schleifkörner einschließt, und einer zweiten (4), die in der Substanz von einem metallischen Bindemittel gebildet ist, das gröbere Schleifkörner als jene der ersten Schicht einschließt.
  5. Schleifscheibe nach Anspruch 4, dadurch gekennzeichnet, dass die Schleifkörner von einem Diamanten gebildet sind.
  6. Schleifscheibe nach einem der Ansprüche 4 und 5, dadurch gekennzeichnet, dass die erste Schicht Körner mit ungefähr 0,2 mm Umgrenzungsdurchmesser in starker Konzentration, mit ungefähr C60 FEPA-Konzentration, aufweist.
  7. Schleifscheibe nach einem der Ansprüche 4, 5 und 6, dadurch gekennzeichnet, dass die zweite Schicht von Schleifkörnern mit ungefähr 0,6 mm Umgrenzungsdurchmesser in geringerer Konzentration, mit ungefähr C40 FEPA-Konzentration, gebildet ist.
  8. Schleifscheibe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Teil der Segmente (8) mit der Achse des Profils, die den durch die Spitze des Profils gehenden Kreis tangiert, angeordnet ist.
  9. Schleifscheibe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein weiterer Teil der Segmente (9) mit der kurzen Seite, die den Außenkreis tangiert, der dem Umkreis des Werkzeugs entspricht, angeordnet ist.
EP02102442A 2001-10-19 2002-10-15 Schneidwerkzeug zum entfernen von überzügen auf mineralischen substraten Expired - Lifetime EP1304190B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE200100675 2001-10-19
BE2001/0675A BE1014434A3 (fr) 2001-10-19 2001-10-19 Methode de conception et de fabrication d'outil de coupe destine a l'enlevement de revetements sur substrats mineraux.

Publications (2)

Publication Number Publication Date
EP1304190A1 EP1304190A1 (de) 2003-04-23
EP1304190B1 true EP1304190B1 (de) 2005-10-12

Family

ID=3897118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102442A Expired - Lifetime EP1304190B1 (de) 2001-10-19 2002-10-15 Schneidwerkzeug zum entfernen von überzügen auf mineralischen substraten

Country Status (6)

Country Link
EP (1) EP1304190B1 (de)
AT (1) ATE306365T1 (de)
BE (1) BE1014434A3 (de)
DE (1) DE60206584T2 (de)
DK (1) DK1304190T3 (de)
ES (1) ES2249540T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012009282U1 (de) 2012-09-27 2014-01-22 Heger Gmbh European Diamond Tools Topfschleifscheibe
EP2712704A2 (de) 2012-09-27 2014-04-02 ITW Heller GmbH Topfschleifscheibe
WO2014105638A1 (en) * 2012-12-31 2014-07-03 Saint-Gobain Abrasives, Inc. Abrasive article having shaped segments

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH696805A5 (de) * 2006-04-10 2007-12-14 Toolpower Gmbh Werkzeug zur Bearbeitung von Flächen aus Natur- und Kunststein.
DE102013202204A1 (de) * 2013-02-11 2014-08-14 Robert Bosch Gmbh Schleifelement
CN115415945B (zh) * 2022-09-28 2024-03-19 江苏锋泰工具有限公司 一种纯干式金刚石磨盘及其制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989215A (en) * 1933-04-25 1935-01-29 Harris Seybold Potter Co Segmental grinding wheel
US5243790A (en) * 1992-06-25 1993-09-14 Abrasifs Vega, Inc. Abrasive member
KR0158750B1 (ko) * 1995-06-09 1999-01-15 김수광 연마용 시트
BE1011027A6 (fr) * 1997-02-21 1999-04-06 Carbodiam Outil abrasif de meulage et methode de conception de cet outil.
DE19707445A1 (de) * 1997-02-25 1998-08-27 Hilti Ag Topfförmige Schleifscheibe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012009282U1 (de) 2012-09-27 2014-01-22 Heger Gmbh European Diamond Tools Topfschleifscheibe
EP2712704A2 (de) 2012-09-27 2014-04-02 ITW Heller GmbH Topfschleifscheibe
WO2014105638A1 (en) * 2012-12-31 2014-07-03 Saint-Gobain Abrasives, Inc. Abrasive article having shaped segments
US9149913B2 (en) 2012-12-31 2015-10-06 Saint-Gobain Abrasives, Inc. Abrasive article having shaped segments
US9700993B2 (en) 2012-12-31 2017-07-11 Saint-Gobain Abrasives, Inc. & Saint-Gobain Abrasifs Abrasive article having shaped segments

Also Published As

Publication number Publication date
EP1304190A1 (de) 2003-04-23
BE1014434A3 (fr) 2003-10-07
ATE306365T1 (de) 2005-10-15
DE60206584T2 (de) 2006-06-29
ES2249540T3 (es) 2006-04-01
DE60206584D1 (de) 2006-02-23
DK1304190T3 (da) 2006-02-20

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